United States. Central Intelligence Agency, CIA World Fact Book, 2004 — Holy See… (2004)
“ In 1984, a concordat between the Holy See and Italy modified certain of the earlier treaty provisions, including the primacy of Roman Catholicism as the Italian state religion. Present concerns of the Holy See include religious freedom, international development, the Middle East, terrorism, the failing health of Pope JOHN PAUL II, interreligious dialogue and reconciliation, and the application of church doctrine in an era of rapid change and globalization. About 1 billion people worldwide profess the Catholic faith. ”
